The funny thing is that Marx wanted the working class to be armed, and in Critique of the Gotha Programme, he called out the US school system as far preferable to the state-controlled school system proposed by what is now SPD (he argued the Prussian state was in need of an education by the people and shouldn't be put in a position of providing an education to the people). A lot of the people who call everything communism would be very uncomfortable with how many things they agreed with him on if they read any Marx (not because they are left wing, but because a lot of what was radical policy at the time is settled now, but also because already then a schism was developing between those on the left who favoured the state as a tool to transform society, and those who feared it as a potential oppressor, and Marx got increasingly critical of the state with age; where in 1848 he argued for state monopolies, by 1872, after the Paris Commune he criticised them for not having gone far enough in smashing state institutions, and by 1875 he criticised the now-SPD for trusting the reform potential of the Prussian state too much, such as with respect to education as above)